Systems Analysis and Design - Chapter 3

Features that must be present in the final system for the user to be satisfied.

Features that must be present in the final system for the user to be satisfied.

Acceptance Criteria

An external agent; a person, group or external system that interacts with the system by supplying or receiving data.

Actor

The boundary between the computerized portion of the application and the users who operate the application but are part of the total system.

Automation Boundary

An often one-sentence description that provides a quick overview of a use case.

Brief Use Case Description

The most fundamental task in a business process, which leaves the system and data in a quiescent state, usually performed by one person in response to a business event.

Elementary Business Process (EBP)

Something that occurs at a specific time and place, can be precisely identified, and must be remembered by the system.

Event

A technique to identify use cases by determining the business events to which the system must respond.

Event Decomposition Technique

An event that occurs outside the system usually initiated by an external agent.

External Event

A relationship between use cases in which one use case is stereotypically included within the other user case.

«include>>

The assumption that a system runs under perfect operating and technological conditions.

Perfect Technology Assumption

An event that occurs when something happens inside the system that triggers some process.

State Event

Checks or safety procedures to protect the integrity of the system and the data.

System Controls

An event that occurs as a result of reaching a point in time.

Temporal Event

An activity that the system performs in response to a request by a user.

Use Case

The UML model used to illustrate use cases and their relationships to actors.

Use Case Diagram

A technique to identify use cases by determining what specific goals or objectives must be completed by the system for the user.

User Goal Technique

One short sentence in the everyday language of the end user that states what a user does as part of his or her work.

User Story